Medizinische Universität Graz - Research portal
Selected Publication:
SHR Neuro Cancer Cardio Lipid Metab Microb
Herrmann, M; Zelzer, S; Cavalier, E; Kleber, M; Drexler-Helmberg, C; Schlenke, P; Curcic, P; Keppel, MH; Enko, D; Scharnagl, H; Pilz, S; März, W.
Functional Assessment of Vitamin D Status by a Novel Metabolic Approach: The Low Vitamin D Profile Concept.
Clin Chem. 2023; 69(11):1307-1316
Doi: 10.1093/clinchem/hvad151
Web of Science
PubMed
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FullText_MUG
- Leading authors Med Uni Graz
- Herrmann Markus
- Zelzer Sieglinde
- Co-authors Med Uni Graz
- Curcic Pero
- Drexler-Helmberg Camilla
- Enko Dietmar
- März Winfried
- Pilz Stefan
- Scharnagl Hubert
- Schlenke Peter
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- Abstract:
- BACKGROUND: Determining serum 25-hydroxyvitamin D [25(OH)D], 24,25-dihydroxyvitamin D [24,25(OH)2D] and the vitamin D metabolite ratio (VMR) allows the identification of individuals with a low vitamin D metabolite profile. Here, we evaluated if such a functional approach provides superior diagnostic information to serum 25(OH)D alone. METHODS: 25(OH)D, 24,25(OH)2D, and the VMR were determined in participants of the DESIRE (Desirable Vitamin D Concentrations, n = 2010) and the LURIC (Ludwigshafen Risk and Cardiovascular Health, n = 2456) studies. A low vitamin D metabolite profile (vitamin D insufficiency) was defined by a 24,25(OH)2D concentration <1.2 ng/mL (<3 nmol/L) and a VMR <4%. Parathyroid hormone (PTH) and bone turnover markers were measured in both cohorts, whereas 10-year mortality data was recorded in LURIC only. RESULTS: The median age in DESIRE and LURIC was 43.3 and 63.8 years, respectively. Median 25(OH)D concentrations were 27.2 ng/mL (68.0 nmol/L) and 15.5 ng/mL (38.8 nmol/L), respectively. Serum 25(OH)D deficiency, defined as <20.2 ng/mL (<50 nmol/L), was present in 483 (24.0%) and 1701 (69.3%) participants of DESIRE and LURIC, respectively. In contrast, only 77 (3.8%) and 521 (21.2%) participants had a low vitamin D metabolite profile. Regardless of the serum 25(OH)D concentration, a low vitamin D metabolite profile was associated with a significantly higher PTH, accelerated bone metabolism, and higher all-cause mortality than an unremarkable vitamin D metabolite profile. CONCLUSIONS: The personalized assessment of vitamin D status using a functional approach better identifies patients with accelerated bone metabolism and increased mortality than the use of a fixed 25(OH)D cutoff of 20 ng/mL (50 nmol/L).
- Find related publications in this database (using NLM MeSH Indexing)
- Humans - administration & dosage
- Adult - administration & dosage
- Middle Aged - administration & dosage
- Vitamin D Deficiency - administration & dosage
- Vitamin D - administration & dosage
- Parathyroid Hormone - administration & dosage